1878.                                                                                      [No. 54

      THE NEW ZEALAND GAZETTE.

liquor-chamber and vat, of a deoxygenizing-chamber interposed in the line of the flow of the liquors, having a liquor-reservoir, a spraying-chamber, a concentric passage formed with a double-cone plug, and an eduction-passage associated with a central exhaust-tube communicating alike with the vessel, the line of pipes, and the exhausting-appliance, substantially as described and illustrated, and for the purposes set forth. (2.) In the tanning of hides and skins arranged and disposed alternately with celluloid mats within vats composed of ferro-concrete rendered non-porous, the compound process described, consisting of exhaustion and deoxygenation, subjecting the hides to triple applications of deoxygenized tanning-liquors of varying densities contained in ferro-concrete chambers, the final application of the strongest tanning-liquor (deoxygenized in transit) being made in conjunction with pulverised tanning-bark placed in the interstices of the separating celluloid mats, such bark being subjected to exhaustive influence prior to the inflow of the tanning-liquor, substantially as described and illustrated, and for the purposes set forth. (3.) In the tanning and drying of hides and skins, the described process, made serviceable by apparatus as illustrated, which consists of introducing deoxygenized tanning-liquors of varying densities into a series of vats exhausted through the medium of deoxygenizing-chambers which are in communication with liquor-chambers, also having deoxygenizing-chambers, the simultaneous exhaustion, by one appliance, of each chamber, and continuing the process of exhaustion to exclude the atmosphere, completing the tanning-stage by extracting the air from pulverised tanning-bark within the vats, and then charging the vats with the strongest tanning-liquor, and finally drying the hides or skins by means of heated air passing through a generator, the dilution of the said air by the separate admission of the atmosphere, the exhaustion of the same through the outlet liquor-pipe and through a deoxygenizing-chamber communicating with the exhausting-appliance, substantially as described and illustrated, and for the purposes set forth. (4.) In the process of tanning described and claimed, the use of apparatus consisting of liquor-chambers and tanning-vats composed of ferro-concrete, and having lids or covers made removable by mechanical means, the deoxygenizing-chambers attached to the vessels and communicating in pairs with the exhausting-appliance, the combination with the vessels and the deoxygenizing-chambers of the pipes and stop-cocks, arranged and operated in the manner described and illustrated, and for the purposes set forth. (5.) In the process of tanning and drying described and claimed, the use of a heating-chamber having air-pipes therein, combined with ferro-concrete vats in communication with deoxygenizing-chambers and an exhausting-appliance, as described and illustrated, and for the purposes set forth. (6.) In the process of tanning, or tanning and drying, the use of non-absorbent mats composed of perforated celluloid, or of celluloid strands having beads thereon, as described and illustrated, and for the purposes set forth.

(Specification, 14s. ; drawing, 2s.).

No. 24416.—14th June, 1907.—THE LAMSON PARAGON SUPPLY COMPANY, LIMITED, of Paragon Works, Canning Town, London, England, Manufacturers, and GEORGE HEATH ROBINSON, of 5 Bedford Road, Crouch End, London aforesaid, a representative of the said company. Improvements in document files or binders.

[NOTE.—This is an application under section 106 of the Act, the date given being the official date of the application in Great Britain.]

Claims.—(1.) A document-file comprising a cover having upstanding solid posts, one or more having a hooked end, and one or more of same also being provided with means for engaging in a holding-device also carried by the cover, substantially as described. (2.) A document-file as described in claim 1, in which the engaging-means for the posts consists in forming the latter with necked heads, which are adapted to be engaged or disengaged by a slotted bar through the medium of a spring, substantially as described. (3.) A document-file as described in claim 1, in which, while one of the solid posts is provided with a hooked end, the remaining posts are eyeleted to receive a binding-cord adapted to be drawn through perforations in the assembled documents, substantially as and for the purpose described. (4.) A document-file as described in claim 1, in which additional perforations are provided in the documents for the reception of rods as l attached to a bar as k, substantially as and for the purpose described. (5.) The document-file substantially as described and illustrated.

(Specification, 2s. 9d. ; drawing, 1s.).

No. 24419.—16th May, 1908.—ARTHUR MARSHALL MCINTOSH, of 157 Macquarie Street North, Sydney, New South Wales, Australia, Dentist. An improved mouth-gag to be used by surgeons and dentists.

Claims.—(1.) The improved mouth-gag for surgical purposes, consisting of an upper and lower jaw articulated together at the rear and turned inwards so that their ends can enter the mouth of the patient, tooth-plates projecting from the turned-in ends of the jaws and at right angles thereto, and a hydraulic plunger articulated to one jaw while a hydraulic cylinder is articulated to the other jaw, and means for operating the hydraulic part of the appliance, as set forth. (2.) In mouth-gags for surgical purposes, in combination, two hinged jaws adapted to lie against the cheek of the patient, the forward ends of the jaws being adapted to enter the mouth of the patient, a hydraulic ram between the articulated jaws, a long narrow hydraulic ram articulated to the cylinder-element of the ram between the jaws, and means for operating the plunger of the long ram, as specified. (3.) In mouth-gags for surgical purposes, in combination, two hinged jaws that are adapted to lie against the cheek of the patient, the forward ends of the jaws being turned inwards and provided with tooth or gum plates at right angles, a hydraulic ram installed between the articulated jaws, the plunger being articulated to one jaw while the cylinder is articulated to the other jaw, a long hydraulic ram of small diameter articulated to the hydraulic cylinder between the articulated jaws, a plunger provided with a terminal button, and means for holding the appliance so that it may be manipulated with one hand of the operator, and an intermediate stop-cock in the long hydraulic cylinder, as set forth. (4.) The general arrangement, construction, and combination of parts in the improved mouth-gag to be used by surgeons and dentists, as set forth, and for the purposes specified.

(Specification, 4s. ; drawing, 1s.)

No. 24435.—23rd May, 1908.—LAMSON CONSOLIDATED STORE SERVICE COMPANY, a corporation organized under the laws of the State of New Jersey, doing business at Newark, New Jersey, and having its principal office at 161 Devonshire Street, Boston, Suffolk, Massachusetts, United States of America (assignees of Albert Washington Pearsall, M.E., of 64 Loring Street, Lowell, Middlesex, Massachusetts aforesaid). Pneumatic-tube systems.

Claims.—(1.) In a terminal for pneumatic despatch-tube apparatus, a valve controlling the delivery-opening of said terminal and adapted to be normally held closed by the pressure within said terminal, and means operated by a carrier in transit in said terminal for opening said valve inwardly against said pressure to permit the delivery of said carrier. (2.) In a terminal for pneumatic despatch-tube apparatus, a valve controlling the delivery-opening of said terminal and adapted to open inwardly and normally held closed by the pressure within said terminal, and pivoted means operated by a carrier in transit in said terminal for opening said valve to permit the discharge of said carrier. (3.) In a terminal for pneumatic despatch-tube apparatus, a swinging valve controlling the delivery-opening of said terminal and adapted to open inwardly and normally held closed by the pressure within said terminal, and a cam lever adapted to be operated by a cam lever in transit within said terminal for opening said valve against said pressure to permit the discharge of said carrier. (4.) In a terminal for pneumatic despatch-tube apparatus, a valve controlling the delivery-opening and adapted to open inwardly of said terminal and normally held closed by the pressure in the terminal greater than the exterior atmospheric pressure, and mechanism arranged to be engaged and actuated by the carrier arriving in said terminal and co-operating with and adapted to open said valve to permit the delivery of said carrier. (5.) In a terminal for pneumatic despatch-tube apparatus, a swinging valve controlling the delivery-opening of said terminal and adapted to open inwardly and normally held closed by the pressure within said terminal, and a cam lever adapted to be operated by a carrier in transit within said terminal to open said valve against said pressure to permit the discharge of said carrier, and provided with a slot in which one end of said valve is pivoted, the other end being pivoted on the terminal.

(Specification, 4s. ; drawing, 1s.)